Arthur B (Barney) Maccabe is an Associate Professor in the Computer Science Department and Director of the Center for High Performance Computing at the University of New Mexico. Along with Patrick Bridges, he also co-directs the Scalable Systems Laboratory. Professor Maccabe’s primary research interests are in the areas of systems software for massively parallel computing systems with an emphasis on the design of operating systems, communication protocols, and interfaces. He has significant experience in the design and implementation of lightweight kernels for massively parallel systems. Professor Maccabe was a principle architect of SUNMOS (Sandia/UNM OS) for the Intel Paragon and Puma/Cougar for the Intel Teraflop (ASCI/Red) at Sandia National Laboratories. In recent years, he has been involved in the development of the Portals API and research that attempts to apply the lessons learned in the development of specialized APIs and protocols to commodity protocols, e.g., TCP/IP.